Simplify the expression.-9 - (3 - 6s)
A. 6 - 6s
B. 12 + 6s
C. -6 - 6s
D. -12 + 6s
Answer: D
Mathematics
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Solve the problem.The average cost of a 1 minute commercial on a leading network channel was $142,000 in the fall of 1999. This was a 9% decrease from the cost a year earlier. What was the cost of a 1 minute commercial on the channel in the fall of 1998?
A. $1278 B. $71,000 C. $156,044 D. $127,800
Mathematics
Write an equivalent expression. Use a commutative law.3 + xy
A. xy + 3, or 3 + yx B. 3xy, or 3yx C. 3 + x + y D. 3(1 + xy)
Mathematics
??For the pair of vectors, find 
.
?
?
A. 
B. ?
C. ?
D. ?
E. ?
Mathematics
Solve.A calculator has a purchase price of $24. If the sales tax on this purchase is $2.04, find the sales tax rate.
A. 0.078% B. 0.915% C. 0.085% D. 8.5%
Mathematics